I have all my apps installed on owner profile. I send them to a guest profile, redo my settings, log into apps and use my phone until it restarts from system update or auto reboots, rinse and repeat. Live version of Tails for GrapheneOS. Only issue is going though the settings menu is actually the most cumbersome part. Seedvault never works, many FOSS apps offer import export feature, would be really nice for settings app to offer it as well to make this feature of GrapheneOS more usable.